New Delhi: Most of us want to get rid of those white flakes of dandruff in our hair, which is a common problem, especially in people with oily skin.

The exact cause of dandruff is still unclear. However, a condition called seborrheic dermatitis, or seborrhea, is believed to be a common cause of it.

During stressful situation, dandruff may get worse. Also, cold, dry winter season can worsen the condition. And that's one reason why people with dry skin tend to get dandruff more often.

Other factors that can trigger dandruff or make it even worse may include – yeast, oily hair and scalp, not shampooing enough, diet, sensitivity to hair care products. Men also tend to have more dandruff issues than women.

Dandruff can also be a result of certain illnesses as adults with neurological diseases, such as Parkinson's disease, are more likely to develop seborrheic dermatitis and dandruff. Similarly, people with HIV infection, or those who have compromised immune systems from other conditions may have dandruff more often than others.

Persistent dandruff, although is harmless, it can be a sign of deficiency in biotin, vitamin B7 or essential fatty acids.

The good thing is that dandruff can be controlled. There are many steps you can take to control or reduce your risk of developing dandruff such as -

Brushing your hair daily and washing it regularly – at least three times a week

Not scratching your scalp when using shampoo

Shampooing often

Avoiding hair products that contain harsh chemicals

Spending a little time outdoors as sunlight may be beneficial for dandruff